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