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