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