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