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