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