One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,13)(5,9)(7,10)(8,12)(11,16)(14,15)(17,18)(19,23)(20,21)(22,26)(24,29)(25,32)(27,28)(30,31)(33,34,39,43)(35,37,46,40)(36,47,45,41)(38,48,44,42)(1,3)(2,6)(4,5)(7,11)(8,14)(9,13)(10,16)(12,15)(17,19)(18,23)(20,27)(21,28)(22,29)(24,26)(25,30)(31,32)(33,35,39,46)(34,40,43,37)(36,38,45,44)(41,48,47,42)(3,11)(4,12)(6,16)(8,13)(17,19,22,29)(18,24,26,23)(20,27,25,30)(21,31,32,28)(33,36,39,45)(34,41,43,47)(35,44,46,38)(37,48,40,42)(1,4)(2,8)(3,5)(6,14)(7,12)(9,16)(10,13)(11,15)(17,19)(18,24)(20,30)(21,28)(22,29)(23,26)(25,27)(31,32)(33,37)(34,35)(36,48)(38,47)(39,40)(41,44)(42,45)(43,46) involution — undirected(1,5)(2,9)(3,12)(4,11)(6,8)(7,15)(10,14)(13,16)(17,20,22,25)(18,21,26,32)(19,27,29,30)(23,28,24,31)(33,35)(34,37)(36,44)(38,45)(39,46)(40,43)(41,48)(42,47)(1,6)(2,3)(4,14)(5,8)(7,16)(9,12)(10,11)(13,15)(17,21)(18,25)(19,28)(20,26)(22,32)(23,30)(24,27)(29,31)(33,38,39,44)(34,42,43,48)(35,45,46,36)(37,47,40,41)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.