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