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