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)(17,18,23,27)(19,21,30,24)(20,31,29,25)(22,32,28,26)(33,34,39,37)(35,40,36,43)(38,45,46,41)(42,48,44,47)(1,3)(2,6)(4,5)(7,11)(8,14)(9,13)(10,16)(12,15)(17,19,23,30)(18,24,27,21)(20,22,29,28)(25,32,31,26)(33,35,39,36)(34,40,37,43)(38,42,46,44)(41,47,45,48)(3,11)(4,12)(6,16)(8,13)(17,20,23,29)(18,25,27,31)(19,28,30,22)(21,32,24,26)(33,36,39,35)(34,40,37,43)(38,44,46,42)(41,47,45,48)(1,4)(2,8)(3,5)(6,14)(7,12)(9,16)(10,13)(11,15)(17,21)(18,19)(20,32)(22,31)(23,24)(25,28)(26,29)(27,30) involution — undirected(1,5)(2,9)(3,12)(4,11)(6,8)(7,15)(10,14)(13,16)(17,19)(18,21)(20,28)(22,29)(23,30)(24,27)(25,32)(26,31)(33,37,39,34)(35,40,36,43)(38,45,46,41)(42,47,44,48)(1,6)(2,3)(4,14)(5,8)(7,16)(9,12)(10,11)(13,15)(17,22,23,28)(18,26,27,32)(19,29,30,20)(21,31,24,25)(33,38)(34,41)(35,42)(36,44)(37,45)(39,46)(40,47)(43,48)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.