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