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)(20,22)(23,24)(25,31)(26,30)(27,28)(29,32)(33,34,39,37)(35,43,46,40)(36,47,45,41)(38,42,44,48)(4,11)(8,14)(10,15)(12,16)(17,19)(18,21)(20,27)(22,28)(23,26)(24,30)(25,29)(31,32)(33,35)(34,40)(36,44)(37,43)(38,45)(39,46)(41,48)(42,47) involution — undirected(2,7)(3,9)(8,14)(10,15)(18,24)(19,26)(20,25)(28,32)(33,34,39,37)(35,40,46,43)(36,41,45,47)(38,42,44,48)(1,3)(2,5)(4,10)(6,9)(7,13)(8,12)(11,15)(14,16)(17,20,23,25)(18,22,24,31)(19,27,26,29)(21,28,30,32)(33,36,39,45)(34,41,37,47)(35,44,46,38)(40,48,43,42)(1,4)(2,8)(3,10)(5,12)(6,11)(7,14)(9,15)(13,16)(17,21)(18,19)(20,28)(22,27)(23,30)(24,26)(25,32)(29,31)(33,37,39,34)(35,40,46,43)(36,47,45,41)(38,42,44,48)(1,5)(2,3)(4,12)(6,13)(7,9)(8,10)(11,16)(14,15)(17,22)(18,25)(19,28)(20,24)(21,29)(23,31)(26,32)(27,30)(33,38,39,44)(34,42,37,48)(35,45,46,36)(40,47,43,41)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.