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