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