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