One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,8)(5,9)(7,12)(10,14)(11,15)(13,16)(18,24)(20,25)(26,31)(28,32)(33,34,39,42)(35,37,44,40)(36,45,38,41)(43,48,46,47)(1,3,5,11)(2,6,9,15)(4,10,12,16)(7,13,8,14)(17,18,23,24)(19,25,21,20)(22,26,30,31)(27,32,29,28)(33,35)(34,40)(36,46)(37,42)(38,43)(39,44)(41,47)(45,48)(1,4)(2,7)(3,10)(5,12)(6,13)(8,9)(11,16)(14,15)(17,19,23,21)(18,25,24,20)(22,27,30,29)(26,32,31,28)(33,36,39,38)(34,41,42,45)(35,43,44,46)(37,47,40,48)(1,3)(2,6)(4,10)(5,11)(7,13)(8,14)(9,15)(12,16)(17,20)(18,19)(21,24)(22,28)(23,25)(26,27)(29,31)(30,32)(33,37)(34,35)(36,47)(38,48)(39,40)(41,43)(42,44)(45,46) involution — undirected(1,4)(2,8)(3,10)(5,12)(6,14)(7,9)(11,16)(13,15)(17,21,23,19)(18,20,24,25)(22,27,30,29)(26,32,31,28)(33,35)(34,37)(36,43)(38,46)(39,44)(40,42)(41,47)(45,48)(1,2)(3,6)(4,7)(5,9)(8,12)(10,13)(11,15)(14,16)(17,22)(18,26)(19,27)(20,28)(21,29)(23,30)(24,31)(25,32)(33,38,39,36)(34,41,42,45)(35,43,44,46)(37,48,40,47)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.