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