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