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