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