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